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Red Hat System Administration I

9.3
9.0
8.2
7

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Table of Contents
Course
Lab Environment

Preface A: Introduction

Section A.1: Red Hat System Administration I

Section A.2: Orientation to the Classroom Environment

Section A.3: Performing Lab Exercises

Chapter 1: Get Started with Red Hat Enterprise Linux

Section 1.1: What Is Linux?

Section 1.2: Quiz: Get Started with Red Hat Enterprise Linux

Section 1.3: Summary

Chapter 2: Access the Command Line

Section 2.1: Access the Command Line

Section 2.2: Quiz: Access the Command Line

Section 2.3: Access the Command Line with the Desktop

Section 2.4: Guided Exercise: Access the Command Line with the Desktop

Section 2.5: Execute Commands with the Bash Shell

Section 2.6: Quiz: Execute Commands with the Bash Shell

Section 2.7: Lab: Access the Command Line

Section 2.8: Summary

Chapter 3: Manage Files from the Command Line

Section 3.1: Describe Linux File System Hierarchy Concepts

Section 3.2: Quiz: Describe Linux File System Hierarchy Concepts

Section 3.3: Specify Files by Name

Section 3.4: Quiz: Specify Files by Name

Section 3.5: Manage Files with Command-line Tools

Section 3.6: Guided Exercise: Manage Files with Command-line Tools

Section 3.7: Make Links Between Files

Section 3.8: Guided Exercise: Make Links Between Files

Section 3.9: Match File Names with Shell Expansions

Section 3.10: Quiz: Match File Names with Shell Expansions

Section 3.11: Lab: Manage Files from the Command Line

Section 3.12: Summary

Chapter 4: Get Help in Red Hat Enterprise Linux

Section 4.1: Read Manual Pages

Section 4.2: Guided Exercise: Read Manual Pages

Section 4.3: Lab: Get Help in Red Hat Enterprise Linux

Section 4.4: Summary

Chapter 5: Create, View, and Edit Text Files

Section 5.1: Redirect Output to a File or Program

SectionSection 5.2: Quiz: Redirect Output to a File or Program

Section 5.3: Edit Text Files from the Shell Prompt

Section 5.4: Guided Exercise: Edit Text Files from the Shell Prompt

Section 5.5: Change the Shell Environment

Section 5.6: Guided Exercise: Change the Shell Environment

Section 5.7: Lab: Create, View, and Edit Text Files

Section 5.8: Summary

Chapter 6: Manage Local Users and Groups

Section 6.1: Describe User and Group Concepts

Section 6.2: Quiz: Describe User and Group Concepts

Section 6.3: Gain Superuser Access

Section 6.4: Guided Exercise: Gain Superuser Access

Section 6.5: Manage Local User Accounts

Section 6.6: Guided Exercise: Manage Local User Accounts

Section 6.7: Manage Local Group Accounts

Section 6.8: Guided Exercise: Manage Local Group Accounts

Section 6.9: Manage User Passwords

Section 6.10: Guided Exercise: Manage User Passwords

Section 6.11: Lab: Manage Local Users and Groups

Section 6.12: Summary

Chapter 7: Control Access to Files

Section 7.1: Interpret Linux File System Permissions

Section 7.2: Quiz: Interpret Linux File System Permissions

Section 7.3: Manage File System Permissions from the Command Line

Section 7.4: Guided Exercise: Manage File System Permissions from the Command Line

Section 7.5: Manage Default Permissions and File Access

Section 7.6: Guided Exercise: Manage Default Permissions and File Access

Section 7.7: Lab: Control Access to Files

Section 7.8: Summary

Chapter 8: Monitor and Manage Linux Processes

Section 8.1: Process States and Lifecycle

Section 8.2: Quiz: Process States and Lifecycle

Section 8.3: Control Jobs

Section 8.4: Guided Exercise: Control Jobs

Section 8.5: Kill Processes

Section 8.6: Guided Exercise: Kill Processes

Section 8.7: Monitor Process Activity

Section 8.8: Guided Exercise: Monitor Process Activity

Section 8.9: Lab: Monitor and Manage Linux Processes

Section 8.10: Summary

Chapter 9: Control Services and Daemons

Section 9.1: Identify Automatically Started System Processes

Section 9.2: Guided Exercise: Identify Automatically Started System Processes

Section 9.3: Control System Services

Section 9.4: Guided Exercise: Control System Services

Section 9.5: Lab: Control Services and Daemons

Section 9.6: Summary

Chapter 10: Configure and Secure SSH

Section 10.1: Access the Remote Command Line with SSH

Section 10.2: Guided Exercise: Access the Remote Command Line

Section 10.3: Configure SSH Key-based Authentication

Section 10.4: Guided Exercise: Configure SSH Key-based Authentication

Section 10.5: Customize OpenSSH Service Configuration

Section 10.6: Guided Exercise: Customize OpenSSH Service Configuration

Section 10.7: Lab: Configure and Secure SSH

Section 10.8: Summary

Chapter 11: Manage Networking

Section 11.1: Describe Networking Concepts

Section 11.2: Quiz: Describe Networking Concepts

Section 11.3: Validate Network Configuration

Section 11.4: Guided Exercise: Validate Network Configuration

Section 11.5: Configure Networking from the Command Line

Section 11.6: Guided Exercise: Configure Networking from the Command Line

Section 11.7: Edit Network Configuration Files

Section 11.8: Guided Exercise: Edit Network Configuration Files

Section 11.9: Configure Hostnames and Name Resolution

Section 11.10: Guided Exercise: Configure Hostnames and Name Resolution

Section 11.11: Lab: Manage Networking

Section 11.12: Summary

Chapter 12: Install and Update Software Packages

Section 12.1: Register Systems for Red Hat Support

Section 12.2: Quiz: Register Systems for Red Hat Support

Section 12.3: Explain and Investigate RPM Software Packages

Section 12.4: Guided Exercise: Explain and Investigate RPM Software Packages

Section 12.5: Install and Update Software Packages with DNF

Section 12.6: Guided Exercise: Install and Update Software Packages with DNF

Section 12.7: Enable DNF Software Repositories

Section 12.8: Guided Exercise: Enable DNF Software Repositories

Section 12.9: Lab: Install and Update Software Packages

Section 12.10: Summary

Chapter 13: Access Linux File Systems

Section 13.1: Identify File Systems and Devices

Section 13.2: Quiz: Identify File Systems and Devices

Section 13.3: Mount and Unmount File Systems

Section 13.4: Guided Exercise: Mount and Unmount File Systems

Section 13.5: Locate Files on the System

Section 13.6: Guided Exercise: Locate Files on the System

Section 13.7: Lab: Access Linux File Systems

Section 13.8: Summary

Chapter 14: Analyze Servers and Get Support

Section 14.1: Analyze and Manage Remote Servers

Section 14.2: Guided Exercise: Analyze and Manage Remote Servers

Section 14.3: Create a Diagnostics Report

Section 14.4: Guided Exercise: Create a Diagnostics Report

Section 14.5: Detect and Resolve Issues with Red Hat Insights

Section 14.6: Quiz: Detect and Resolve Issues with Red Hat Insights

Section 14.7: Summary

Chapter 15: Comprehensive Review

Section 15.1: Comprehensive Review

Section 15.2: Lab: Manage Files from the Command Line

Section 15.3: Lab: Manage Users and Groups, Permissions, and Processes

Section 15.4: Lab: Configure and Manage a Server

Section 15.5: Lab: Manage Networks

Section 15.6: Lab: Mount File Systems and Find Files

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Quiz: Redirect Output to a File or Program

Redirect Output to a File or Program

Choose the correct answer to the following questions:

1.

Which output redirection operator displays output to a terminal and discards all error messages?
A
&> file
B
2> &> file
C
2> /dev/null
D
1> /dev/null
2.

Which output redirection operator sends output to a file and sends errors to a different file?
A
> file 2> file2
B
> file 1> file2
C
> file &2> file2
D
| tee file
3.

Which output redirection operator sends both output and errors to a file, and creates it or overwrites its contents?
A
| tee file
B
2 &> file
C
1 &> file
D
&> file
4.

Which output redirection operator sends output and errors to the same file and preserves the file content if it exists?
A
> file 2> file2
B
&> file
C
>> file 2>&1
D
>> file 1>&1
5.

Which output redirection operator discards all messages that are normally sent to the terminal?
A
> file 2> file2
B
&> /dev/null
C
&> /dev/null 2> file
D
&> file
6.

Which output redirection operator sends output to both the screen and a file at the same time?
A
&> /dev/null
B
> file 2> file2
C
| tee file
D
| < file
7.

Which output redirection operator saves output to a file and discards all error messages?
A
&> file
B
| tee file 2> /dev/null
C
> file 1> /dev/null
D
> file 2> /dev/null

Discuss Red Hat System Administration I

Go to community

RH124 Chapter 15 Lab 3: Install zsh Package

VictoriaB97

16 sty 2024

Hello,I am trying to finish up Lab 3 of the Chapter 15 Comprehensive Review Labs in RH124, and when I type in sudo dnf install zsh for the 6th specification of the lab, I get an error message basically saying that it failed to download metadata for the repo 'ansible-2.9-for-rhel-9-x86_64-rpms', and that they could not download repomd.xml. It provided a 404 status code.Can someone please let me know what the problem is, and if there is a current workaround? Thanks.

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3

1650

Red Hat System Administration I | Guided Exercise: Explain and Investigate RPM Software Pack

AbeHiero

10 lis 2023

I cannot start the lab with command: lab start software-rpm. I get this error:ModuleNotFoundError: No module named 'rhcsa-classroom'Script software-rpm not in course library rhcsa-classroom Anyone else see this?

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1183

Red Hat System Administration I (RH124)

Haley_Ruccio

19 lip 2023

The first of two courses covering the core system administration tasks needed to manage Red Hat Enterprise Linux serversRed Hat System Administration I (RH124) is designed for IT professionals without previous Linux system administration experience. The course provides students with Linux administration competence by focusing on core administration tasks. This course also provides a foundation for students who plan to become full-time Linux system administrators by introducing key command-line concepts and enterprise-level tools. This course is the first of a two-course series that takes a computer professional without Linux system administration knowledge to become a fully capable Linux administrator. These concepts are further developed in the follow-on course, Red Hat System Administration II (RH134).This course is based on Red Hat® Enterprise Linux 9.0.Course content summaryIntroduce Linux and the Red Hat Enterprise Linux ecosystem.Run commands and view shell environments.Manage, organize, and secure files.Manage users, groups and user security policies.Control and monitor systemd services.Configure remote access using the web console and SSH.Configure network interfaces and settings.Manage software using DNFAudience for this courseThe primary persona is a technical professional with current or pending responsibilities as a Linux enterprise or cloud system administrator.This course is popular in Red Hat Academy, and is targeted at the student who is planning to become a technical professional using Linux.Prerequisites for this courseBasic technical user skills with computer applications on some operating systems are expected.Take our free assessment to gauge whether this offering is the best fit for your skills.Technology considerationsThere are no special technical requirements for this course.This course is not designed for bring your own device (BYOD).Internet access is not required but is recommended so that students can research and browse Red Hat online resources.

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Revision: rh124-9.3-770cc61

Lab Controls

Click Create to build all of the virtual machines needed for the classroom lab environment. This may take several minutes to complete. Once created the environment can then be stopped and restarted to pause your experience.
When a lab is created, click Start to run all of the virtual machines in the classroom.
Click Stop to stop all the virtual machines from running. This will not delete your lab.
If you Delete your lab, you will remove all of the virtual machines in your classroom and lose all of your progress.

Virtual machine actions

Click Start to power on the virtual machine.
Click Shutdown to gracefully shut down the virtual machine, preserving disk contents.
Click Power off to forcefully shut down the virtual machine, while still preserving disk contents.
Click Open console to connect to the system console of the virtual machine in a new browser.

Auto-stop timer

The Red Hat Learning Subscription entitles you to set allotment of lab time.
To help conserving your allotted time, the lab environment uses automatic timers to stop or destroy your lab environment when the timer expires.

Click the Auto-stop button [+] to extend the time you would like to spend with the labs.
Click the Auto-destroy button [+] to add day(s) to the auto-destroy timer.

Auto-stop has a maximum of 11 hours, and auto-destroy has a maximum of 14 days.
Be careful to keep the timers set while you are working, so that your environment doesn't shut down unexpectedly.
We also suggest not to set the auto-timers unnecessarily high, which could waste your lab time allotment

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